Hi everybody I really need your support. I use ABB ACS880-07-1450A-7 and arc happened on feeding bus bars.
ABB Frequency Converter Infeed Module Exposed Bus Lines Arc Occurred, It may happened several time.Fuses blows, Please take a look photos. I saw breaker protection relay like 3phase short circuit. We replaced cables, transformers and checked motor but everything seems normal. But can not understand the root cause. I cancelled drive and replace motor with 6,3kV motor with starter. But I want to use driver again. I suspected harmonics but drive also cause harmonic and it may not damaged with own harmonics. Please help me, I wonder your comments. I can give more details. firstname.lastname@example.org
The incoming short circuit protection that you referred, is that on the source breaker that is feeding this drive? is that breaker feeding anything else or just this one drive?
either way, it is most likely something is wrong between the disconnect and the drive modules. I hope this helps.